Look at verse four of the above passage. God chose us in Christ before the foundation of the world. Simply put, before the foundation of the world is before creation. So then, the verse could easily read, for he choses us in Christ before he ever created anything. Further, verse six says that the purpose was to bring praise to his glorious grace. This has profound implications indeed. It shows beyond possible doubt that redemption was God's purpose in creation.
God knew that humanity could not properly handle the knowledge of good and evil, and he knew that humanity could not praise him without the knowledge of good and evil, and likewise, he knew that given the choice, humanity would chose the knowledge of good and evil. This is precisely why he/God made redemption his first purpose in creation, and it was done with wisdom and understanding.
Further to this point, the knowledge of good and evil is the source of ALL human depravity. Coupled with mortality, the inevitable death that we all face, we have been given the survival instinct to aid in keeping us alive in all forms of danger, both physical and psychological. It is the capability to judge. All judgment comes from the knowledge of good and evil and it is interesting that Jesus said, "judge not lest you be judged." However, with humanity, having the knowledge of good and evil, this is an impossible commandment.
The source of all evil comes from groups of people having power, deciding issues in their favor, and then judging themselves right and others wrong. It is the source of all greed. The knowledge of good and evil, coupled with death causes greed due to self preservation. Think about it. This self preservation is necessary for humanity to survive. This is the situation that humanity needed to be redeemed for and from.
I am writing this post to add understanding to a previous post which follows below. I am repeating it because it will offer additional insight and illumination. It will show that way in which the Holy Spirit using the gospel of grace can help humanity overcome the effects of this necessary fall.